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US Patent: 1,623,290
Portable saw
Patentee:
Fred W. Wappat - Pittsburgh, PA

USPTO Classifications:
192/133, 30/377, 30/390, 83/98

Tool Categories:
woodworking machines : circular saws
woodworking machines : handheld power tools
specialty tools : handheld power tools
woodworking machines : woodworking machine parts or accessories : woodworking machine safety guards

Assignees:
None

Manufacturer:
Fred W. Wappat - Mayville, NY
Fred W. Wappat - Pittsburgh, PA
Wappat Gear Works - Pittsburgh, PA

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 26, 1926
Granted: Apr. 05, 1927

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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"Vintage Machinery" entry for Wappat Gear Works
Description:
The chief innovation is an improved retractable guard; other improvements are a cutout in the guard so the operator can see the cut line, and a means of clearing sawdust from the cut line.

This design was subsequently improved in patent 1,830,579 and patent 1,830,580.

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